Advertisements
Advertisements
Question
Tick(✓) the correct choice in the following:
In the circuit shown in the following fig, the e.m.f. of the cell is 4 volts, the current
flowing through the resistor is
Options
`2/3`A
2 A
1`1/2` A
1`1/3` A
4A
Advertisements
Solution
`2/3`A
APPEARS IN
RELATED QUESTIONS
Define watt. Write down an equation linking watts, volts and amperes.
What is meant by "electric power"?
When a current I flows through a resistance R for time t, the electrical energy spent is given by:
(a) IRt (b) I²Rt (c) `IR^2t` (d) `I^2R ⁄t`
Fig . shows the essent ial features of a battery operated bell. The hammer strikes the gong when the swi tch is closed . State and explain the effect of using the following material successively to form the core.
(a) Plastic
(b) Steel
(c) Copper
What is electric power? State and define its S.I. unit.
A device is used to transform 12 V a.c. to 200 V a.c. What is the name of this device? Name the principle on which it works.
A bulb is connected to a battery of e.m.f. 6V and internal resistance 2Ω A steady current of 0.5A flows through the bulb. Calculate the heat energy dissipated in the bulb in 10 minutes.
The unit of e.m.f. of a cell is ____________.
